PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/04-22:58:00
G08     296.9          23.0               15.7 +/-    1.10      32.1 +/-    1.10  0.050 / 0.080
G10     354.8          62.5               14.5 +/-    0.83      16.1 +/-    0.83  0.050 / 0.070
G14     226.2          43.5               19.9 +/-    0.96      27.4 +/-    0.96  0.070 / 0.110
G18     57.2           53.6               15.5 +/-    0.86      18.8 +/-    0.86  0.070 / 0.090
G21     143.1          43.1               18.4 +/-    0.81      25.4 +/-    0.81  0.060 / 0.080
G24     62.1           28.4               13.2 +/-    0.43      23.9 +/-    0.43  0.060 / 0.090
G27     257.9          33.7               17.4 +/-    1.69      28.3 +/-    1.69  0.030 / 0.030